Two-way hose check valve



June 23, 1936. 'E o; SWANLAND 2 2,044,921

\ TWO-WAY HOSE CHECK'VALVE Filed July 17, 1935 i 4 nmlnlmllmnlll Patented June 23, 1936 UNITED STATES PATENT oFFlxcl?.

l TWO-WAY HOSE CHECK VALVE Frederick 0, Swanland, Philadelphia, Pa.

Application July 17, 1935, Serial No. 31,895

v 1 Claim.

This invention relates to an improved two-way hose check valve, and while it may be used in connection with any equipment for the distribupipes, when both pipes are connected to a T tting having a hose connected thereto. This type of two-way hose check valve can also be co'nnected directly to tanks or other receptacles.

Another purpose is to provide a valve of this kind, wherein the metal swing check valve proper may operate in simulation to a pendulum and be ground on each side and to engage opposed ground seats of the valve body and therefore provide for water tight engagement or joint when the pendulum check valve proper closes against either seat. i

Another purpose is to provide means, in a two way hose check valve to prevent the fluid pressure from seeping past the fulcrum of the pendulum valve proper and urge a back pressure on the valve, said means being retained in position by means of the bonnet o f the valve casing.

It is to be understood that the particulars herein given are in no way limitative, and that while still keeping within the scope of the invention, any desired modication of details and proportions may be made in the construction of the appliance according to circumstances.

The invention comprises further features and combination of parts to be hereinafter set forth, shown in the drawing and claimed.

In the drawing:

Figure 1 is a view of the two-way hose check valve as applied between two pipes, one delivering cold water, the other delivering hot water into the valve casing, there being an outlet pipe with a hose attached thereto, and through which hot or cold water may be discharged or the mixture of both therethrough at one time for the purpose of washing floors and equipment, in such plants as dairies, breweries and soft drink plants.

Figure 2 is a vertical sectional view, showing how the pendulum valve may be easily removed, after the bonnet is detached.

Figure 3 is a detail perspective view o! a disc element mounted under the bonnet and into the upper end of the valve casing.

Figure 4 is a sectional view on line l-l of Figure l.

Referring to the drawing, I identifles'a valve casing proper provided with two opposite axially aligned inlet openings 2 and 3, which are internally threaded at 4, the threads of which are to be .engaged by the threads on the adjacent ends of the short pipe sections 5 and 6. The remote ends of the pipe sections 5 and ,6 are externally lthreaded at 'l for threaded engagement into elbows 8. These elbows in turn are connected to pipes 9 and lll, the former of which may carry cold water to the valve casing, the latter of which carryingl hot water. The valve casing has an outlet passage Il internally threaded at l2 for the reception of the threaded end cf an outlet pipe section I3, and to which a hose i4 may be connected.

The interior of the valve casing l (which may be of any shape and of any size and constructed of any suitable metal) is suillcient for` the reception of a check valve proper l5, which is mounted on a pivot pin I6 to swing in simulation to a pendulum, it depending on which direction the fluid in the pipes 9 and in is ilowing, and in the event that the fluid is ilowing in both pipes 9 and Ill with substantial equal pressure the pendulum valve willbalance substantially at the center between the two inlets. It is obvious that the pendulum valve is thicker at its lower end, and therefore, heavier at such point.

At opposed positions closer to the center of the interior of the valve casing valve engaging seats l1 are provided. These seats are disposed on diverging angles from the pivot pin I6, and

are suitably ground for the purpose of insuring water tight joints when the pendulum valve is closed against either of the seats. The lower part of the pendulum valve is circular and it has an. extension I8 at its upper portion. This extension terminates in a cylindricalsleeve i8 for the reception of the pivot pin l5. The upper part of the valve casing has an extension 20, the exterior being cylindrical. However, the interior of the extension 20 has an opening 2|, which is substantially oblong transversely of the extension 2t, substantially wherein the pivot pin I8 is mounted. The upper end of the extension 20 has a countersink 22 for the reception of a circular boss 23 integral with a disc 24, which rests on the upper end of the extension 20. A bonnet is threaded at 28 on the extension 2l and is adapted to hold the disc 24 on the upper end of the extension 20, with. the integral circular boss 23 engaged in the countersinkn. Projecting from the circular boss 23 is a tongue 21 likewise oblong to t the openmg 2|. The lower end of this tongue is shaped at 28 to straddle the cylindrical sleeve I9 of the extension I8 of the pendulum valve proper. The ground seats are in align with the opposite diverging walls 29 of the crotch 28 of the tongue 21. By this particular construction and when the pendulum valve is engaged with the left hand ground seat, fluid pressure is prevented from seeping over the cylindrical sleeve I9 to the left hand face of the pendulum valve I5, that is, when the uid pressure is ilowing in the direction of the arrows a. When the fluid is ilowing in the opposite direction, as indicated by the arrows b uid pressure is prevented from seeping in the opposite direc-y tion over the sleeve to the right hand face of the pendulum valve. However, when uid pressure is flowing in both directions toward each other as indicated by the arrows a and b the pendulum valve will balance substantially approximately centrally of the` valve casing, in which case the hot and cold water or other uid maymix in passing through the pipe section I3 and through the hose I4.

'I'he extension 20 of the valve casing is provided with diametrically opposite openings 30 inter-.

nally threaded for the reception of plugs 3|, against which the opposite ends of the pivot pin may engage. By removing one or the other or both of the plugs 3I it is possible to extract the pivot pin I6, and then remove the v alve through the opening 2I.

When water or other fluid is entering either inlet of the'valve body the pressure of the uid or water forces the swing check valve I5 to close against the opposite seat, when only one feed valve of either of the pipes 9 and IB is open, but

when it is desirable to` mix hot and cold fluid or water, the pressures can be equalized by adjusting both feed valves of the pipes 9 and I0, and in this event the check valve I5 will balance substantially at the center of the check valve casingq However, in the event that the pressures should become uneven or, the source of supply through one of the pipes 9 and III should fail, the stronger pressure of uid or water would have a tendency to swing the check valve against the opposite seat, thus preventing pressure from backing into the opposite feed pipe.

The invention having been set forth, what is claimed is:

In a two-way hose check valve, a valve casing having diametrically opposite aligned inlets and an outlet extending at right angles from and intermediate the inlets, said valve casing having downwardly divergent valve seats, said valve casing having an extension diametrically opposite the outlet, said extension having a passage adjoining to and extending from the valve seats, a swing check valve fulcrumed in said passage and adapted to close against either of the valve 2 t seats and contacted by the check valve when engaging the seats to prevent leakage around the 35 plvoted end of the check valve.

FREDERICK O. 

